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Animal Mitochondrial Genetics

Animal Mitochondrial Genetics

Among all the organelles in an animal cell, only mitochondria have their own independent genomes. Animal mitochondrial DNA is a double-stranded, closed-circular molecule with around 20,000 base pairs. Mitochondrial DNA is unique in that one of its two strands, the heavy, or H, -strand is guanine rich, whereas the complementary strand is cytosine rich and called the light, or L, -strand. Compared to nuclear DNA, mitochondrial DNA has a very low percentage of non-coding regions and is marked by...

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Updated: Dec 26, 2025

Methodology for Accurate Detection of Mitochondrial DNA Methylation

Methodology for Accurate Detection of Mitochondrial DNA Methylation

Published on: May 20, 2018

Detection of mitochondrial DNA (mtDNA) mutations.

Ali Naini¹, Robert Gilkerson², Sara Shanske³

¹Laboratory of Personalized Genomic Medicine, Department of Pathology and Cell Biology, Columbia University, New York, NY, United States; Houston Merritt Clinical Research Center for Inherited Myopathies and Mitochondrial Diseases, Department of Neurology, Columbia University Medical Center, New York, NY, United States.

Methods in Cell Biology

|March 19, 2020

Summary

Mitochondrial DNA (mtDNA) mutations cause respiratory chain dysfunction and encephalomyopathies. This study details molecular techniques for detecting large-scale rearrangements and point mutations in mtDNA.

Keywords:

Mitochondria Mutations Next generation sequencing Real-time PCR mtDNA

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Methodology for Accurate Detection of Mitochondrial DNA Methylation

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Author Spotlight: High-Throughput Image-Based Quantification of Mitochondrial DNA Synthesis and Distribution

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Genotyping Single Nucleotide Polymorphisms in the Mitochondrial Genome by Pyrosequencing

Genotyping Single Nucleotide Polymorphisms in the Mitochondrial Genome by Pyrosequencing

Published on: February 10, 2023

Area of Science:

Genetics
Molecular Biology
Biochemistry

Background:

Mitochondrial DNA (mtDNA) is maternally inherited and encodes essential respiratory chain subunits.
Pathogenic mtDNA mutations lead to respiratory chain dysfunction and various encephalomyopathies.
Understanding mtDNA mutations is crucial for diagnosing and treating these disorders.

Purpose of the Study:

To provide an overview of mitochondrial DNA (mtDNA) mutations.
To describe molecular techniques for detecting mtDNA mutations.
To highlight methods for identifying large-scale rearrangements and point mutations.

Main Methods:

Overview of mitochondrial DNA (mtDNA) structure and gene content.
Description of molecular techniques for mutation detection.
Focus on methods for identifying large-scale rearrangements and point mutations.

Main Results:

Mitochondrial DNA (mtDNA) mutations are a significant cause of encephalomyopathies.
Specific molecular techniques are effective in detecting different types of mtDNA mutations.
The described methods allow for the identification of both large-scale rearrangements and point mutations.

Conclusions:

Mitochondrial DNA (mtDNA) mutations are implicated in a growing number of encephalomyopathies.
Accurate detection of mtDNA mutations requires specialized molecular techniques.
The presented methods aid in the diagnosis of mtDNA-related disorders.